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Old 04-28-2019, 01:56 PM
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Reverse brake bleeding

Putting a master cylinder on a race car and the cap is directly under a roll bar, so basically I need to reverse bleed the system. Any suggestions on a good tool at a good price? I've looked around but thought I'd see what opinions others had

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Old 04-28-2019, 03:57 PM
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Just use a oil can as picture, clean out first with brake fluid. Connect to each bleed nipple in turn with a rubber pipe starting with the furthest from the M/C. Used this method when having trouble getting the air out of the system

https://www.hotrodders.com/forum/att...1&d=1556488404
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Old 04-28-2019, 04:22 PM
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Quote:
Originally Posted by brading View Post
Just use a oil can as pictured, clean out first with brake fluid. url]https://www.hotrodders.com/forum/attachment.php?attachmentid=442783&stc=1&d=1556488 404[/url]
I would not use a used oil can as pictured but would use a new one that was rinsed absolutley clean with brake cleaner.

Brake fluid will not dissolve/reduce/remove/clean out oil .It will Contaminate brake fluid however.

Why not add a remote reservoir to you system if you cannot remove the filler cap on the master.
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Old 04-28-2019, 04:29 PM
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Here is an example.

https://www.speedwaymotors.com/EMPI-...ts,294378.html

Now, it aint pretty, but it should give you some ideas as to what I am talking about. Run 2 hoses down to the existing master from this reservoir.
You should be able to drill holes in the side of the master reservoir to tap it with a pipe thread fitting size and screw in a NPT to hose barb style fitting .Hook that to the down hoses from the reservoir.

I am sure you can find a prettier ,more hotrod designed reservoir ,of course. But I hope yo get the Idea I am posing here. creating this setup will give you easy access to check the fluid and bleed in a traditional manner.

Just a thought.
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Old 04-28-2019, 06:36 PM
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Remote resavoir is a good call, if it was mine I'd prob do that, however it's not and the guy just said change my master. Cylinder. Simply reverse bleeding is the only viable option.
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Old 04-28-2019, 09:09 PM
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Use a clutch master cylinder.

A jeep cherokee from 85-01 has one that can be found in almost any junkyard.

Hose is plastic snd easy to cut then slide a hose over.

You dont need the pedals but they are easy to pull. Or just push the master in by hand.

Clutch master is 2 bolts.
Pedals will have you pulling the booster and dropping the wheel.
Booster is 4 and the rest is like 4 more.

Should have the master and pedals out in around 30 minutes. With around $30 in parts for a high pressure reverse bleeder.

Master,line,slave come off as one unit. Just cut the plastic line in the yard.

https://www.summitracing.com/parts/l...oaAm86EALw_wcB
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Old 04-29-2019, 01:11 AM
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[QUOTE=LATECH;4669079]I would not use a used oil can as pictured but would use a new one that was rinsed absolutley clean with brake cleaner.

Brake fluid will not dissolve/reduce/remove/clean out oil .It will Contaminate brake fluid however.

Fair point. I meant a new not a used one which I should have made clear.
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Old 04-29-2019, 04:13 AM
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If you want to go the remote reservoir route you can get a kit from which includes the cap companies such as Performance Online

Last edited by brading; 04-29-2019 at 04:20 AM.
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Old 04-29-2019, 04:55 AM
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[QUOTE=brading;4669077]Just use a oil can as picture, clean out first with brake fluid.

My mistake should have said brake cleaner not brake fluid, would do this with a new can.
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Old 04-29-2019, 05:04 AM
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A small pressurized garden sprayer will work, just replace the nozzle with tubing. Used frequently in motorcycle brake servicing.
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Old 05-06-2019, 11:49 PM
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I have found back bleeding using a clean, dedicated brake fluid, oil can the simplest and easiest and cheapest method. This is commonly done with motorcycles and aircraft and pushes any air in the direction that they naturally want to go, being up.....
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Old 05-07-2019, 12:40 AM
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Thats a pretty fancy pants oil can..
..where'd that get sourced from...the several o have a cheap *** things that i dont think would push any fluid back to the MC

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